Abstract
An electrostatic paper feed device was proposed, developed and tested. The device consists of a single 3-phase electrode structure stator sheet which drives paper directly via electrostatic forces. This device's simple structure offers much better space usage than traditional friction roller devices. Moreover, since frictional forces are not essential for operation, this device can transport low friction materials. Because the electrostatic forces are distributed over the entire paper surface, it can also drive paper that is both thin and delicate. PPC paper, printer paper, magazine paper and Japanese washi paper have been tested as transport material and each type could be propelled when the relative humidity conditions were less than 30%, 30%, 40% and 50%, respectively. Since performance is sensitive to humidity changes, this electrostatic technology cannot be expected to replace traditional devices in all circumstances. However, in the case of business machines such as copiers, the merits of employing a much more compact electrostatic paper feed mechanism are clear. In addition to the paper feed applications, it is also expected that this technology can be applied to precision paper positioning systems.
